I was wondering how much would it cost me to have posi installed onto my 68 buick riviera so i can get the power of the 455 to the pavement quicker...now i know im not gonna find a donor car and i have been looking...so if i order all the parts what unit will be rhe best and not to expensive? By the way i live in st paul mn so i would use a shop around here and wonder how much should i expect to be charged?
Sorry to say it, but there are no aftermarket posi carriers or gearsets available. You'll have to find a donor carrier and possibly gears from a '67-'70 Wildcat, Electra or Riviera. Keep in mind the ratios up to 3.07:1 use a different carrier than 3.42:1 and up numerically. Devon
Fowler Auto Parts in Griffin, GA has a rusty old 1970 posi out of a 1970 Riv GS. Its rusty and will need a complete rebuild, but I bet you could get it for $100 + shipping. Maybe he will sell you just the center section. He's open Thursday through Saturday. The number to call is 770-412-9991. Good luck.
They don't have an application that covers the '67 - '70 9.375" carriers, only the '71-'75. The two designs are incompatible with each other. It took me a long time to find a 3.42:1 carrier and gears for my '67, but I came across a posi for my current 3.07:1 setup within a few months of posting here in "parts wanted" and keeping an eye on ebay. Devon
Thanks Devon.... I wasn't aware that they didn't manufacture one for those particular years!!!! Thanks for the free education! :Smarty: :TU:
i also want to put a posi on my 68 skylark . i herd that you have to do the hole rear end out of a later car . would you mind letting me know what you come up with
The rear end he needs for his Riviera is a world apart from what you will need for your Skylark. You have it easy in comparison. Really. I would suggest you do a search, or start a new thread. :TU:
Contact Jim (monzaz is his V8Buick.com username): http://www.v8buick.com/member.php?u=3880 http://www.jdrace.com/ Bearings are available, but the original posi clutches are not. He has come up with possible clutch substitutions, though. I don't know anyone who would be better able to take care of you than him. Devon
i dont belive they make the parts to rebuild our units (spider gears etc.....) if i am incorrect please correct me....... just my 2 cents worth scott
Finally got around to checking up on my rear end and it turns out that i already have posi....and then i found the markings and they match up..guesd thats a good thing but still need to rebuilt it in the future
Hate to say it, but I might've misspoken. One part of their site shows the listing for the later 9.375", but the page I just found does not show an application for that rear axle either: http://www.richmondgear.com/powertrax/buicklr.pdf Devon
that's the one i found too,,, I noticed there isn't even a spline count for the axle... oh well, got my hopes up!
That 71-75 is a 'O' type 9.3 rear 12 bolt cover with 12 bolt guts 31 spline axles. That will fill in your blanks. Jim THE Buick 9.3 ended in 1970- I do not even know where they came up with the 8.2 in the riv for 65-70...??? That is wrong should be for the LeSabre maybe..??? lol Jim
BOY that whole chart is for CRAP! look they have 12 bolt chevy 30 spline rear 1910 unit in for 1977 century..??? RIGHT??? and 1977 -78 rivera...??? AGAIN what the ... ? Chevy c-clip 12 bolt 30 spline ended 1972 ALL other rears full size or mid size went to 28 or 31 spline after 1973 Jim JD
